NACE CP1 QUIZZES,PRACTICAL EXAM
WITH CORRECT QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+ 2025 – 2026
When servicing a rectifier, which of the following practices
should be followed?
a) test case for voltage before contacting
b) test case for voltage before contacting and look for
discoloration and vent obstructions
c) listen for unusual noises and look for discoloration and
vent obstructions
d) test the case for voltage before contacting, listen for
unusual noises, look for discoloration and vent obstructions,
smell for unusual odors - ANSWERS-d
What could be the cause of a normal DC voltage but zero
current output in an impressed current system? - ANSWERS-
broken cable to the anodes
,How is a deep anode installed? - ANSWERS-15 meters or
more below the surface
Above which value is a structure AC voltage-to-ground
considered hazardous? - ANSWERS-15 V AC at full power
line load
What should one do first when approaching the rectifier
case? - ANSWERS-check the rectifier for AC case-to-ground
voltage
Who is the lock out/tag out (LOTO) removed by? -
ANSWERS-the person installing the LOTO
If carrying carbon coke breeze, copper sulfate, solvents,
and/or acids, what sheet must you carry with you? -
ANSWERS-Safety Data Sheet (SDS)
What terminal is the reference electrode hooked up to for
structure to electrolyte potential readings? - ANSWERS-
negative
, How do you determine if a casing is shorted to the pipeline?
- ANSWERS-potential of casing is within 5 mV of pipeline
potential
What is the total resistance in a series circuit consisting of
three resistances: 1 Ohm, 2 Ohms, and 10 Ohms? -
ANSWERS-13 Ohms
If a resistance of 0.17 Ohms was measured across a
conductive material L = 1 m, D = 10 cm, what is its
resistivity? - ANSWERS-0.13 Ohm-cm
Cations are _____ charged ions - ANSWERS-positively
Anions are ______ charged ions - ANSWERS-negatively
Which of the follow is true about an electrochemical cell?
a) as polarization decreases, current will decrease
b) as polarization increases, current will decrease
c) as polarization increases, there is no change in current
WITH CORRECT QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+ 2025 – 2026
When servicing a rectifier, which of the following practices
should be followed?
a) test case for voltage before contacting
b) test case for voltage before contacting and look for
discoloration and vent obstructions
c) listen for unusual noises and look for discoloration and
vent obstructions
d) test the case for voltage before contacting, listen for
unusual noises, look for discoloration and vent obstructions,
smell for unusual odors - ANSWERS-d
What could be the cause of a normal DC voltage but zero
current output in an impressed current system? - ANSWERS-
broken cable to the anodes
,How is a deep anode installed? - ANSWERS-15 meters or
more below the surface
Above which value is a structure AC voltage-to-ground
considered hazardous? - ANSWERS-15 V AC at full power
line load
What should one do first when approaching the rectifier
case? - ANSWERS-check the rectifier for AC case-to-ground
voltage
Who is the lock out/tag out (LOTO) removed by? -
ANSWERS-the person installing the LOTO
If carrying carbon coke breeze, copper sulfate, solvents,
and/or acids, what sheet must you carry with you? -
ANSWERS-Safety Data Sheet (SDS)
What terminal is the reference electrode hooked up to for
structure to electrolyte potential readings? - ANSWERS-
negative
, How do you determine if a casing is shorted to the pipeline?
- ANSWERS-potential of casing is within 5 mV of pipeline
potential
What is the total resistance in a series circuit consisting of
three resistances: 1 Ohm, 2 Ohms, and 10 Ohms? -
ANSWERS-13 Ohms
If a resistance of 0.17 Ohms was measured across a
conductive material L = 1 m, D = 10 cm, what is its
resistivity? - ANSWERS-0.13 Ohm-cm
Cations are _____ charged ions - ANSWERS-positively
Anions are ______ charged ions - ANSWERS-negatively
Which of the follow is true about an electrochemical cell?
a) as polarization decreases, current will decrease
b) as polarization increases, current will decrease
c) as polarization increases, there is no change in current
